What is a hard bump in the groin. First of all, we should clarify the nature of the source of the hard lump that the patient is talking about. First of all, there are several possibilities, it could be an enlarged lymph node, if inflammation occurs in the lower limbs of the patient, it could lead to an enlarged lymph node in the inguinal region, which is manifested by redness, swelling, heat, pain and tenderness of the swelling, and also a swelling in the inguinal region, you should also exclude the possibility of an inguinal hernia, there is a hernia If the main manifestation of this inguinal hernia is a swelling, the swelling will increase when the patient’s intra-abdominal pressure rises or when the patient is active, and the swelling will disappear when the patient is at rest or lying down. This inguinal hernia is a disease that is easily overlooked, and a hard lump in the inguinal region should also be ruled out for tuberculosis, whether the patient has a history of tuberculosis, and whether it is a metastatic tumor or lymphoma. Identification of metastases and lymphomas requires histocytological aspiration, or excision or biopsy of the mass to determine the nature of the mass before deciding on the next treatment plan.